Which of the following drugs is listed as Schedule IV in the material?

• A. Ibuprofen
• B. Oxazepam
• C. Acetaminophen
• D. Penicillin

Answer: (B)

Schedule IV substances are those with medical use but a relatively lower potential for abuse and dependence than higher schedules. Oxazepam fits this pattern as a benzodiazepine prescribed for anxiety and related conditions; it has a recognized medical use, but carries a risk of physical or psychological dependence, so it’s placed in Schedule IV rather than non‑scheduled or a more restrictive schedule. Ibuprofen and acetaminophen are over-the-counter analgesics with no controlled‑substance status, and penicillin is an antibiotic, also not scheduled. Thus, oxazepam is listed as Schedule IV.